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Ayesha


Active since 2014

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Ideal two dimensional step function
I am currently implementing a 5x5 kernel suing the following ideal two-dimensional step function: <</matlabcentral/answers/u...

bijna 10 jaar ago | 0 answers | 0

0

answers

Question


blurring an image by creating a kernel
Hello, I have an image which I need to blur by creating a filter explicitly but I seem to forget the basic math behind deblur...

ongeveer 10 jaar ago | 1 answer | 0

1

answer

Question


Image division into blocks
Hello, I have a code that divides an image into 16x16 blocks. This works really well. However the content of the 16x16 block ...

meer dan 10 jaar ago | 2 answers | 0

2

answers

Question


Error vector used in vector quantization
Hello, I was going through existing vector quantization algorithms and I stumbled upon Kekre's Error Vector Rotation algorith...

meer dan 10 jaar ago | 0 answers | 0

0

answers

Question


Size of the array after Huffman Encoding
Hello, I have observed that the size of the array generally increasing after huffman encoding process in MATLAB. For example:...

meer dan 10 jaar ago | 1 answer | 0

1

answer

Question


Index exceeding array during data transmission
Hello, I'm transmitting data through channel which is simulated in matlab. The data goes through source and channel coding. T...

meer dan 10 jaar ago | 0 answers | 0

0

answers

Question


Image reconstruction after applying dwt
I have applied dwt2 on 2D image, applied source and channel coding on LL sub band and transmitted it. Now I have a question ...

meer dan 10 jaar ago | 0 answers | 0

0

answers

Question


Combining image after diving it into blocks
Hello, I applied dwt on 500x500 image and split LL which is 254x254 into 16x16 block. Here's the code snippet which explains ...

meer dan 10 jaar ago | 1 answer | 0

1

answer

Question


storing values of iteration in loop with varying rows and columns
I'm having a for loop where operation is being performed on every image block. This image block has varying rows and columns at ...

meer dan 10 jaar ago | 1 answer | 0

1

answer

Question


Difference between huffman decoding for image matrix and vector
Hello, I've been wondering about the basic difference related to the the role of huffman decoding algorithm between an image ...

meer dan 10 jaar ago | 1 answer | 0

1

answer

Question


Storing values in cell instead of struct
Hello, So I've been wondering about an alternate way to store a whole bundle of information as double instead of struct. This...

meer dan 10 jaar ago | 1 answer | 0

1

answer

Question


Read brightness level of the video
Hello, I have been wondering about it and tried searching for software that could basically give me the maximum brightness va...

meer dan 10 jaar ago | 1 answer | 0

1

answer

Question


avi video from image error
Hello, Here, I'm trying to convert image frames to video. The image frames are contained in the folder 'folder_1'. Whenever I...

bijna 11 jaar ago | 1 answer | 0

1

answer

Question


Error in plot code
The code is very simple where I have to plot the denoising error as a function of mu. how ever I am getting error at ...

bijna 11 jaar ago | 1 answer | 0

1

answer

Question


Norm of a vector
Hi, I would like to ask if there is any simple way of calculating norm of vector rather than using built-in function norm?

bijna 11 jaar ago | 1 answer | 0

1

answer

Question


Analyze frequency spectrum on Matlab
Link ( <http://oi58.tinypic.com/20hwocw.jpg> ) shows the time and frequency spectrum of 1D signal. I just wanted to interpret th...

bijna 11 jaar ago | 1 answer | 0

1

answer

Question


Rewriting a loop construct
Just a thought guys, how would you rewrite this loop construct? if i < 4 subplot(4,1,i+1); plo...

bijna 11 jaar ago | 1 answer | 0

1

answer

Question


How to stretch a 1-D signal over the axes
I basically want to compare the original signal with the output signal which has been shortened and hence I want to observe it a...

bijna 11 jaar ago | 2 answers | 0

2

answers

Question


Code about getting different features from the image
Hello everyone, I have attached an image which is basically the output of my code. It performs in the same way as dwt2 functi...

bijna 11 jaar ago | 1 answer | 0

1

answer

Question


Matlab not recognizing the file within directory
I've had this issue once and this is the second time. When I'm running a file whose path has already been set and all the releva...

bijna 11 jaar ago | 1 answer | 0

1

answer

Question


Reduction of code lines
Alright, so I've written this particular thing to blur an image and I've been wondering if I could reduce the number of lines or...

bijna 11 jaar ago | 2 answers | 0

2

answers

Question


Reduce the steps within this code
Hi there! I've been wondering of a way to cut down the steps of sorting the transform and thresholding which constructs an im...

bijna 11 jaar ago | 1 answer | 0

1

answer

Question


Reconstructing the image from specific number of coefficicents
Hi there! Alright, so I've been working on this little piece of code to construct an image using specific coefficicents and t...

bijna 11 jaar ago | 1 answer | 0

1

answer

Question


White Gaussian Noise and threshold
Hello there, I have the SNR values and the corresponding threshold values. Now, I'm wondering how I could optimize the thresh...

bijna 11 jaar ago | 1 answer | 0

1

answer

Question


Wavelet and image processing
Hi there! Alright, so I've been working on this little piece of code to approximate image using wavelets and there's this err...

bijna 11 jaar ago | 1 answer | 0

1

answer